At 19:46 -0500 03/28/2002, Richard Welty wrote:

>
>the GC/AMP/Leviton stuff comes in a couple of variants, some jacks have
>Telco style 110 punch downs, which are easiest to do with an actual
>punchdown tool. others are a snap type affair you can do with your fingers.

Richard, do you have an opinion on which system is better?  I used 
punch down on the theory that something you punched down was likely 
to make a better connection, but it was mostly just an assumption 
rather than an informed opinion.

This reminds me of something else though.  After installing your 
cable and terminating the ends (punching to jacks) you'll want to 
test your connections.  Do you have a continuity tester such as an 
ohmmeter?  Out of the thirty-seven jacks I installed in my house I 
found four I think that were bad in at least one wire and had to be 
redone.   Don't snap the jacks into the wall plates until you've 
tested the continuity because it's usually very akward to connect 
wires to the jack after the jack is in a wall plate and they're 
difficult to get out of the wall plates.  Also, leave slack in case 
you have to just cut the end off the cable and try again.

Which reminds me of something else, which Richard touched on.  Not 
all wall plates fit perfectly with all brands of modular jacks.  So 
test the fit before you go hog wild buying stuff, or ask someone who 
knows what fits with what.

The easiest way to test that I found was to take a known good patch 
cable and patch to jacks together in the wiring closet that shared a 
wall plate out in the house.  Then I have a couple of special 
ethernet cables that I made.  These are just an RJ45 plug with about 
a foot of wire coming out.  At the end of the wire, I stripped the 
ends of the eight wires.  So, you plug one of these special cables 
into each of the two jacks that you've connected together at the 
other end.  Then test for continuity between like colors.   If you 
find a problem, it's a bit more difficult to localize, but this way 
you can test two cables at a time, and all the terminals are in one 
place.  You don't have to run a 100' of cable from the wiring closet 
to the other end of the cable.

Jeff Walther

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